Heat transfer coil



May 5, 1935- T. N. HUBBUCH ET AL 2,039,593

HEAT TRANSFER COIL Filed June 20, 1935 /545/ 7 adp/1.2. 7D. l Z0 Ov BY 0J d 'A TTORNEY Patented May 5, 1936 HEAT TRANSFER COIL Theodore N. Hubbuch and William G. OToole,

Lonisvill e, Ky.

Animation June zo, 1935, serial No. 27,589

1 Claim.

This invention relates to heat exchangers and has special reference to a cooler for cooling fluids s uch as beer, ale and the like, the invention being preferably termed a beer cooler although, as will presently appear, it may be used for cooling or heating any fluid which may be caused to ow through the device.

' One important object of the invention is to provide an improved and novel device of this character which can be manufactured in a simple and economical p manner.

A second important object of the invention is to provide an improved and novel form of such cooler constructed of two like and complementary i5 castings so that the two castings can be made from a single pattern.

A third important object of the invention is to provide a novel device of this character having improved means for permitting the heat to pass from the liquid in the interior of the device out#- Wardly.

A fourth important object of the invention is to provide a novel device of this sort wherein the castings are reinforced by means which also act to aid in the heat transfer.

- A fth important object of the device is to provide a coil with a simple means of cleaning. and inspecting.

With the above and other objects in view, the

invention consists in general of certain novel details of construction of combinations of parts hereinafter fully described, illustrated in the accompanying drawings and speciiically claimed.

In the accompanying drawing, like characters of reference indicate like parts in the several views, and

Figure l is an inside face view of one of the plates used herein.

Figure 2 is an outside face view of the 'other of said plates.

Figure 3 is a section through the assembled device on the line 3-#3 of Figure 2.

Figure 4 is a similar section on the line 4-4 of Figure 2.

The cooler of this invention is formed from two plates of substantially the same character.

' Each of these plates consists of a rectangular casting or stamping Il) having on one side central portion I I spaced evenly from the peripheral portion I2 of the casting I0. In this central portion I I is formed a groove consisting of straight parallel portions I3 and return bends I4 each connecting an end of one portion I3 with the corresponding end of the adjacent portion I3 so that the groove is continuous from end to end. The face of the central portion II, except for the groove, lies in a plane so that when the two plates are properly assembled the planes of these faces will coincide and the groove of one plate will register with the groove of the other plate to form a tube 5 continuous from one ed to the other.

Between the central portion I I and the peripheral portion I.2 of each plate is a groove I 5 for the reception of a gasket I6 which seals the periphery of the joint between the vtwo plates so that liquid 10 passing through the tube formed by the grooves I3 and I4 cannot escape from the cooler.

It will be observed that the groove portion I3 at each end of each plate terminates the groove in a rectilinear manner. One of the plates -has 15 on its outside at each end a tubular boss I1 which connects with the groove of the plate at a very obtuse angle and in these bosses are screwed nipples |8 for the inlet and outlet of the beer or other fluid to be cooled. 20

0n the outer side of each plate there are formed alternate parallel grooves I9 and ribs 20, the ribs 20 being positioned over the straight portions of the interior grooves while the exterior grooves are positioned between adjacent straight 25 portions of the uid. The ribs 2li thus overlie and strengthen the thin portions of the plates overlying the fluid conducting grooves and also act as ns for transfer of heat from within the cooler which is surrounded by ice or other re- 30 frigerantwhen in use. I'he grooves I9 act to increase the area chilled by the refrigerant and also to decrease the thickness of the metal through which heat transfer occurs.

At the ends of each groove I9 is provided nat 35 portions 2l which increase the thickness of the metal and strengthen the plates at the bends I4.

Along the edges of each plate are provided bolt holes 22, the holes in one plate being in alinement with the holes in the other plate when the two are 40 assembled in proper relation. Through the alined openings pass bolts 23 provided with wing nuts 24 so that the two plates may be held tightly together or taken apart for cleansing by a simple manipulation without necessitating the use of 45 tools.

It is to be observed that the very obtuse angles at which the bosses and nipples lie in relation to the ends of the groove parts I3 enable fluid to flow into and out of the cooler without eddies and 50 thus Without stirring up such fluids as beer and ale, such stirring being undesirable in certain types of liquids.

In use the two plates are assembled and one nipple is connected by a suitable tube to the lfrom the same pattern. it being merely necessary to make the boss parts detachable as is common in constructing patterns for castings having projections one of which does not exist on the other. Similar arrangements may be made in the case oi stampings.

There has thus been provided a simple and emcient device of the kind and for the purpose specified.

It is obvious that changes may be made in the form and construction of the invention without departing from the principles of the invention. It is not, therefore, desired to confine the invention to the exact form herein described but it is desired to include al1 suchas come within the scope of the appended claim.

What is claimed is:

A cooler of the class described including a pair of complementary cast plates of like form, each of said plates havingia groove in one face formed of straight parallel portions connected at their ends by return bends, said grooves registering with each other to form a tube and provided with inlet and outlet openings at the opposite ends of said tube, the faces in which the grooves are formed being plane surfaces to fit tightly togetier, the remaining faces of said plates being provided with ribs extending in alinement with the grooves, said last faces having grooves extending longitudinally between the ribs and depressed below the peripheral portions of the said last faces to provide thin .walls for the straight portions of the tube. said peripheral portions having complementary semi-circular grooves surrounding the rst mentioned grooved portions, an elastic gasket heldin said semi-circular' grooves and sealing the joint between said plates, bolts passing through the peripheral portions between the gasket and the edges of the plates, and wing nuts on said bolts to force the plates together and compress the gasket.

THEODORE N. HUBBUCH. WILLIAM G. OTOOLE. 

